我正在尝试运行一个存储过程,但由于某种原因它一直在告诉我"Specified cast is not valid"
。“ hidSelectedExpenseIDs
”是一个隐藏字段,填充了一个 id 的 javascript 数组。
示例:"hidSelectedExpenseIDs.Value"
看起来像“123,124,125,126”。因此,为什么我.Split(',')
在那里。
这是我的代码:
public void hasExhistingExpenseInvoice()
{
string[] Expenses = hidSelectedExpenseIDs.Value.Split(',');
//check if there is an existing invoice. Then report back to the user so the
//user knows if he/she has to check overwrite option.
bool invoiceExists = false;
foreach (var expense in Expenses)
{
var connection = new SqlConnection(ConfigurationManager.ConnectionStrings["OSCIDConnectionString"].ToString());
var command = new SqlCommand("p_CaseFiles_Expenses_InvoiceExhists", connection);
command.Parameters.Add(new SqlParameter("@ExpenseID", SqlDbType.Int));
command.Parameters["@ExpenseID"].Value = Convert.ToInt32(expense);
command.CommandType = CommandType.StoredProcedure;
try
{
connection.Open();
invoiceExists = (bool)command.ExecuteScalar();
if (invoiceExists)
{
//previous invoice exhists
Warning1.Visible = true;
Warning1.Text = "There is an exhisting Invoice.";
}
}
catch (SqlException sql)
{
lblStatus.Text = "Couldn't connect to the Database - Error";
lblStatus.ForeColor = System.Drawing.Color.Red;
}
catch (Exception ex)//catches exception here
{
lblStatus.Text = "An error occured";
lblStatus.ForeColor = System.Drawing.Color.Red;
}
finally
{
if (connection.State == ConnectionState.Open)
connection.Close();
}
}
}
这是我的存储过程:
ALTER PROCEDURE dbo.[InvoiceExhists]
@ExpenseID int
AS
BEGIN
SELECT InvNumber FROM dbo.Expenses from ExpID = @ExpenseID
END